Question

Which of the following layers of the atmosphere is free from clouds?
A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere

Answer 1

Hint: This layer of the atmosphere lies above the troposphere and extends up to a height of fifty km. This layer absorbs ultraviolet radiation and protects the earth from the harmful form of energy.

Complete answer: The blanket of gases that surround the earth is known as the atmosphere. The atmosphere has five different layers, one of them is the stratosphere. It is the second layer of the atmosphere, it lies above the troposphere. The temperature in this layer remains constant. One of the significant features of the layer is that it is free from the clouds, and it contains the ozone layer, a layer that absorbs the harmful rays of the sun.
While talking about the other options,
A. The lowest layer of the atmosphere is called the Troposphere. The layer contains water vapour and dust particles. The average height of the layer is thirteen km. At the equator, the troposphere thickens because of the transported heat. The climate and weather changes take place in this layer.
C. Above the stratosphere lies the mesosphere. The temperature starts decreasing in this layer, it decreases to minus a hundred degrees. The height extends up to eighty km. The upper limit of the layer is known as mesopause.
D. The thermosphere lies above the menopause. The layer contains electrically charged particles known as ions. The radio waves transmitted from the earth are reflected back by this layer. The Exosphere lies above this layer.

Thus the correct option is B.

Note: Without the atmosphere, life on the earth is impossible as it contains the air that we breathe, protects from the ultraviolet or UV rays from the sun, also helps in keeping the climate moderate, etc.